Hi Paul,
To remove the extra Partition and re-format the Sandisk Cruzer as FAT32:
1) Right Click "MY Computer" and select "Manage"
2) Under Computer Management, select "Disk Management"
3) Select your 'SanDisk Cruzer' device.
4) Right Mouse click the right most partition and select "Delete Partition". and then create a new ONE (only one).
5) Now reformat it as Fat32.
This should now solve your problem, and allow your Tyros2 to recognize your SanDisk Cruzer. Good luck. Let us know how this goes.
Scott